2型单纯疱疹病毒中的基因缺失增强树突状细胞功能和T细胞活化。

Gene Deletion in Herpes Simplex Virus Type 2 Enhances Dendritic Cell Function and T Cell Activation.

作者信息

Retamal-Díaz Angello, Weiss Kayla A, Tognarelli Eduardo I, Freire Mariela, Bueno Susan M, Herold Betsy C, Jacobs William R, González Pablo A

机构信息

Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.

Department of Microbiology and Immunology, Albert Einstein College of Medicine, New York, NY, United States.

出版信息

Front Immunol. 2017 Nov 10;8:1523. doi: 10.3389/fimmu.2017.01523. eCollection 2017.

Abstract

Herpes simplex virus (HSV) type 1 (HSV-1) and type 2 (HSV-2) produce lifelong infections that are associated with frequent asymptomatic or clinically apparent reactivation. Importantly, HSV express multiple virulence factors that negatively modulate innate and adaptive immune components. Notably, HSV interfere with dendritic cell (DC) viability and function, likely hindering the capacity of the host to mount effective immunity against these viruses. Recently, an HSV-2 virus that was deleted in glycoprotein D was engineered (designated ΔgD-2). The virus is propagated on a complementing cell line that expresses HSV-1 gD, which permits a single round of viral replication. ΔgD-2 is safe, immunogenic, and provided complete protection against vaginal or skin challenges with HSV-1 and HSV-2 in murine models. Here, we sought to assess the interaction of ΔgD-2 with DCs and found that, in contrast to wild-type (WT) virus which induces DC apoptosis, ΔgD-2 promoted their migration and capacity to activate naïve CD8 and CD4 T cells and . Furthermore, DCs exposed to the WT and ΔgD-2 virus experienced different unfolded protein responses. Mice primed with DCs infected with ΔgD-2 displayed significantly reduced infection and pathology after genital challenge with virulent HSV-2 compared to non-primed mice, suggesting that DCs play a role in the immune response to the vaccine strain.

摘要

单纯疱疹病毒1型(HSV-1)和2型(HSV-2)会引发终身感染,常伴有频繁的无症状或临床表现明显的病毒再激活。重要的是,HSV表达多种毒力因子,这些因子会对先天性和适应性免疫成分产生负面影响。值得注意的是,HSV会干扰树突状细胞(DC)的活力和功能,可能会阻碍宿主对这些病毒产生有效免疫的能力。最近,构建了一种糖蛋白D缺失的HSV-2病毒(命名为ΔgD-2)。该病毒在表达HSV-1 gD的互补细胞系上繁殖,这允许进行一轮病毒复制。ΔgD-2是安全的、具有免疫原性的,并且在小鼠模型中能为阴道或皮肤免受HSV-1和HSV-2攻击提供完全保护。在此,我们试图评估ΔgD-2与DC的相互作用,发现与诱导DC凋亡的野生型(WT)病毒不同,ΔgD-2促进了DC的迁移以及激活初始CD8和CD4 T细胞的能力。此外,暴露于WT和ΔgD-2病毒的DC经历了不同的未折叠蛋白反应。与未用DC免疫的小鼠相比,用感染ΔgD-2的DC免疫的小鼠在受到强毒力HSV-2生殖器攻击后,感染和病理表现显著减轻,这表明DC在对疫苗株的免疫反应中发挥作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5646/5686121/c02e3b08ffe7/fimmu-08-01523-g001.jpg

相似文献

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索